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The above diagram shows the color scheme of the layout in the main result page. The parent entities and officers who have significant controls over the individuals in focus are always inapplicable. The offspring entities and appointments are those entities that the individuals in focus can influence on.

Clicking the links on parent entities or officers, and offspring entities or managed companies will put them in focus and show upstream or downstream connections. In general, ascendant entities can be found by moving toward upstream, and descendant entities are by toward downstream. In this way, progenitor entities such as grandparent companies (parents of parent), sibling companies (children of parent), partner companies (parents of child), and progeny entities such as grandchild companies (children of child) can be found easily.

Jump to: Offsprings
Parent entities and officers
Inapplicable
parent relation
Individuals in focus

Karayiannis, Tassos, Prof

    Related profiles found in government register
  • Karayiannis, Tassos, Prof
    British born in January 1957

    Resident in United Kingdom

    Registered addresses and corresponding companies
    • Brunel University London, Kingston Lane, Uxbridge, Uxbridge, Middlesex, UB8 3PH, United Kingdom

      IIF 1
  • Karayiannis, Tassos, Professor
    British born in January 1957

    Resident in England

    Registered addresses and corresponding companies
    • Suite 777, 8 Shepherd Market, Mayfair, London, W1J 7JY, United Kingdom

      IIF 2
    • 251 Howell Building, Brunel University London, Uxbridge, Middlesex, UB8 3PH, England

      IIF 3
  • Mr Tassos Karayiannis
    British born in January 1957

    Resident in United Kingdom

    Registered addresses and corresponding companies
    • Brunel University London, Kingston Lane, Uxbridge, Uxbridge, Middlesex, UB8 3PH, United Kingdom

      IIF 4
child relation
Offspring entities and appointments 3
  • 1
    ECO-THERM TECHNOLOGIES LTD
    17017803
    Suite 777 8 Shepherd Market, Mayfair, London, United Kingdom
    Active Corporate (5 parents)
    Officer
    2026-02-06 ~ now
    IIF 2 - Director → ME
  • 2
    GEOTHERMAL ENERGY ADVANCEMENT ASSOCIATION LTD
    13299021
    Ceraphi House Unit R2, Eurocentre, North River Road, Great Yarmouth, Norfolk, England
    Active Corporate (11 parents)
    Officer
    2023-03-17 ~ 2025-12-19
    IIF 1 - Director → ME
    Person with significant control
    2023-05-03 ~ 2025-12-22
    IIF 4 - Has significant influence or control over the trustees of a trust OE
  • 3
    UK NATIONAL HEAT TRANSFER COMMITTEE CIC
    13963370
    Suite Ro, Morgan Reach House, 136 Hagley Road, Birmingham, England
    Active Corporate (5 parents)
    Officer
    2022-03-08 ~ now
    IIF 3 - Director → ME

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Contains public sector information retrieved at 22 March 2026 and licensed under the Open Government Licence v3.0.